Trucking Jobs New Driver Jobs Flatbed Jobs Tanker Jobs Refrigerated Jobs Auto Hauler Jobs
Page 1 of 7 123 ... LastLast
Results 1 to 10 of 62
  1. #1
    Couch Commander
    Member Since
    Oct 2006
    Trucker?
    No Answer
    Posts
    1,752
    Thanks
    10,081
    Thanked: 11,984 Times

    All I Transmit Is A Squeal...

    I have an older Grant XL. It's been in a box for years and years. I installed into my truck and when I transmit all anyone hears is a loud squeal. It recieves just fine.

    I measured the impedance of the antennas and it was 18 M-ohms. No idea what it should be. It has dual 4' fire sticks on it.

    When I did the SWR test according to the manual I was getting 3 on the unit's meter.

    Where should I look next?


  2. #2
    Road Train Member stranger's Avatar
    Member Since
    Oct 2006
    Location
    NC
    Trucker?
    34 Years
    Posts
    3,227
    Thanks
    982
    Thanked: 4,019 Times
    I know what you said in the other thread, but, I couldn't resist.

    http://www.youtube.com/watch?v=9gLN3...eature=related

  3. #3
    Couch Commander
    Member Since
    Oct 2006
    Trucker?
    No Answer
    Posts
    1,752
    Thanks
    10,081
    Thanked: 11,984 Times
    And to think I posted it down here to get a serious answer...

  4. #4
    Road Train Member stranger's Avatar
    Member Since
    Oct 2006
    Location
    NC
    Trucker?
    34 Years
    Posts
    3,227
    Thanks
    982
    Thanked: 4,019 Times
    Is it squealing through the cb speaker when you transmit, or can the noise just be heard by other people. It could be your mic.

  5. The Following User Says Thank You to stranger For This Useful Post:

    Ken

  6. #5
    Couch Commander
    Member Since
    Oct 2006
    Trucker?
    No Answer
    Posts
    1,752
    Thanks
    10,081
    Thanked: 11,984 Times
    Quote Originally Posted by stranger View Post
    Is it squealing through the cb speaker when you transmit, or can the noise just be heard by other people. It could be your mic.
    Just squeals on other's radios.. I do get a little whine into my stereo speakers though..

    I did just put an RK mic on it. Maybe I'll put the original back on and see what happens..

  7. #6
    Banned or Retired Scarecrow03's Avatar
    Member Since
    Sep 2006
    Location
    In Your Head
    Trucker?
    7 Years
    Age
    40
    Posts
    3,392
    Thanks
    6,362
    Thanked: 7,439 Times
    It's most likely your flux capacitor's inability to generate the 1.21 jigawatts necessary to activate the antenna's thermoelectric transducer.

    Just swap your flux capacitor for a Mr. Fusion nuclear reactor and try a different frequency ratio within 6.23924 MHz of top dead center and you should be fine.

  8. The Following User Says Thank You to Scarecrow03 For This Useful Post:

    Ken

  9. #7
    "Freshy Fresh"
    Member Since
    Sep 2008
    Trucker?
    No Answer
    Posts
    1,078
    Thanks
    818
    Thanked: 1,173 Times
    I would say it's probably the SWR is too high. 3 is on the higher end and it
    would be best to have it down around at least 1.

    The lower your SWRs the better.

    Awhile back my SWRs got up there and I was also transmitting just a squeal when
    I would key up.

  10. The Following User Says Thank You to Coonass For This Useful Post:

    Ken

  11. #8
    Couch Commander
    Member Since
    Oct 2006
    Trucker?
    No Answer
    Posts
    1,752
    Thanks
    10,081
    Thanked: 11,984 Times
    Quote Originally Posted by Coonass View Post
    I would say it's probably the SWR is too high. 3 is on the higher end and it
    would be best to have it down around at least 1.

    The lower your SWRs the better.

    Awhile back my SWRs got up there and I was also transmitting just a squeal when
    I would key up.
    I know it's too high.. How do I get it under 2?

    What was your solution?

  12. #9
    High Risk Load Member rocknroll nik's Avatar
    Member Since
    Oct 2008
    Location
    can't read the sign
    Trucker?
    6 Years
    Posts
    4,477
    Thanks
    9,752
    Thanked: 5,750 Times
    To get the antennas calibrated arent you supposed to trim down the antenna or something like that. I can get a half decent set up going but when it comes to the fine tuning I go to a cb shop.

  13. #10
    Banned or Retired Scarecrow03's Avatar
    Member Since
    Sep 2006
    Location
    In Your Head
    Trucker?
    7 Years
    Age
    40
    Posts
    3,392
    Thanks
    6,362
    Thanked: 7,439 Times
    In all seriousness, it is entirely possible you threw off your SWRs by swapping antennas. You might have to get a different coax, especially if you're still using the factory stuff.

Page 1 of 7 123 ... LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •